Package com.linkedin.d2.balancer.util.hashing

Examples of com.linkedin.d2.balancer.util.hashing.ConsistentHashRingTest


      for (Map.Entry<String, Object> entry : sourceMap.entrySet())
      {
        @SuppressWarnings("unchecked")
        Map<String, Object> partitionDataMap = (Map<String, Object>) entry.getValue();
        String weightStr = PropertyUtil.checkAndGetValue(partitionDataMap, "weight", String.class, "URI weight");
        PartitionData data = new PartitionData(PropertyUtil.parseDouble("weight", weightStr));
        map.put(PropertyUtil.parseInt("partitionId", entry.getKey()), data);
      }
    }
    return map;
  }
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  }

  @Override
  public LoadBalancerStateItem<ServiceProperties> getServiceProperties(String serviceName)
  {
    ServiceProperties serviceProperties = new ServiceProperties(_service, _cluster, _path, _strategyName);
    return new LoadBalancerStateItem<ServiceProperties>(serviceProperties, 1, 1);
  }
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    List<String> prioritizedSchemes = new ArrayList<String>();

    prioritizedSchemes.add("http");

    return (getServiceProperties)
        ? new LoadBalancerStateItem<ServiceProperties>(new ServiceProperties("service-1",
                                                                             "cluster-1",
                                                                             "/foo",
                                                                             "rr",
                                                                             Collections.<String>emptyList(),
                                                                             Collections.<String, Object>emptyMap(),
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    assertTrue(_state.isListeningToService("service-1"));
    assertNotNull(_state.getServiceProperties("service-1"));
    assertNull(_state.getServiceProperties("service-1").getProperty());

    ServiceProperties property =
        new ServiceProperties("service-1", "cluster-1", "/test", "random");

    _serviceRegistry.put("service-1", property);

    assertTrue(_state.isListeningToService("service-1"));
    assertNotNull(_state.getServiceProperties("service-1"));
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    _state.listenToService("service-1", new NullStateListenerCallback());

    assertNull(_state.getClient("service-1", uri));

    _serviceRegistry.put("service-1", new ServiceProperties("service-1", "cluster-1",
                                                            "/test", "random", null,
                                                            Collections.<String, Object>emptyMap(),
                                                             null, null, schemes, null));

    assertNull(_state.getClient("service-1", uri));
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    // set up state
    _state.listenToService("service-1", new NullStateListenerCallback());

    assertNull(_state.getStrategy("service-1", "http"));

    _serviceRegistry.put("service-1", new ServiceProperties("service-1",
                                                            "cluster-1",
                                                            "/test",
                                                            "random",
                                                            Collections.<String>emptyList(),
                                                            Collections.<String, Object>emptyMap(),
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    _state.listenToService("service-1", new NullStateListenerCallback());
    _state.listenToCluster("cluster-1", new NullStateListenerCallback());

    assertNull(_state.getStrategy("service-1", "http"));

    _serviceRegistry.put("service-1", new ServiceProperties("service-1",
                                                            "cluster-1",
                                                            "/test",
                                                            "random",
                                                            Collections.<String>emptyList(),
                                                            Collections.<String,Object>emptyMap(),
                                                            null,
                                                            null,
                                                            schemes,
                                                            null));

    assertNotNull(_state.getStrategy("service-1", "http"));

    LoadBalancerStrategy strategy = _state.getStrategy("service-1", "http");

    assertNotNull(strategy);
    assertTrue(strategy instanceof RandomLoadBalancerStrategy);

    // check that we're getting the exact same strategy (by pointer) every time
    assertTrue(strategy == _state.getStrategy("service-1", "http"));
    assertTrue(strategy == _state.getStrategy("service-1", "http"));

    // now make sure adding a cluster property won't change the strategy
    _clusterRegistry.put("cluster-1", new ClusterProperties("cluster-1"));

    // we should still have the same strategy now
    LoadBalancerStrategy newStrategy = _state.getStrategy("service-1", "http");
    assertNotNull(newStrategy);
    assertTrue(strategy == newStrategy);
    assertTrue(newStrategy instanceof RandomLoadBalancerStrategy);

    strategy = newStrategy;

    // refresh by adding service
    _serviceRegistry.put("service-1", new ServiceProperties("service-1",
                                                                "cluster-1",
                                                                "/test",
                                                                "random",
                                                                Collections.<String>emptyList(),
                                                                Collections.<String,Object>emptyMap(),
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    assertNull(_state.getStrategy("service-1", "http"));

    // Put degrader into the strategyList, it it not one of the supported strategies in
    // this strategyFactory, so we should not get a strategy back for http.
    strategyList.add("degrader");
    _serviceRegistry.put("service-1", new ServiceProperties("service-1",
                                                            "cluster-1",
                                                            "/test",
                                                            "unusedInThisConstructor",
                                                            strategyList,
                                                            Collections.<String, Object>emptyMap(),
                                                            null,
                                                            null,
                                                            schemes,
                                                            null));
    _clusterRegistry.put("cluster-1", new ClusterProperties("cluster-1"));
    assertNull(_state.getStrategy("service-1", "http"));

    // put the random strategy into the Strategy list, it is one of the supported strategies in the
    // strategyFactory for this unit test
    strategyList.clear();
    strategyList.add("random");
    _serviceRegistry.put("service-1", new ServiceProperties("service-1",
                                                            "cluster-1",
                                                            "/test",
                                                            "unusedInThisConstructor",
                                                            strategyList,
                                                            Collections.<String, Object>emptyMap(),
                                                            null,
                                                            null,
                                                            schemes,
                                                            null));

    _clusterRegistry.put("cluster-1", new ClusterProperties("cluster-1"));

    LoadBalancerStrategy strategy = _state.getStrategy("service-1", "http");

    assertNotNull(strategy);
    assertTrue(strategy instanceof RandomLoadBalancerStrategy);

    // now add the degraderV3 strategy into the Strategy list
    strategyList.addFirst("degraderV3");
    _serviceRegistry.put("service-1", new ServiceProperties("service-1",
                                                            "cluster-1",
                                                            "/test",
                                                            "unusedInThisConstructor",
                                                            strategyList,
                                                            Collections.<String, Object>emptyMap(),
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    assertNull(_state.getStrategy("service-1", "http"));

    // Use the _clusterRegistry.put to populate the _state.clusterProperties, used by
    // _state.refreshServiceStrategies
    _clusterRegistry.put("cluster-1", new ClusterProperties("cluster-1"));
    _serviceRegistry.put("service-1", new ServiceProperties("service-1",
                                                              "cluster-1",
                                                              "/test",
                                                              "unusedInThisConstructor",
                                                              strategyList,
                                                              Collections.<String, Object>emptyMap(),
                                                              Collections.<String, Object>emptyMap(),
                                                              Collections.<String, String>emptyMap(),
                                                              schemes,
                                                              Collections.<URI>emptySet()));

    LoadBalancerStrategy strategy = _state.getStrategy("service-1", "http");
    assertNotNull(strategy, "got null strategy in setup");

    // test serial to make sure things are working before concurrent test
    TransportClient resultTC = _state.getClient("service-1", "http");
    assertNotNull(resultTC, "got null tracker client in non-concurrent env");

    ExecutorService myExecutor = Executors.newCachedThreadPool();
    ArrayList<TcCallable> cArray = new ArrayList<TcCallable>();

    List<TrackerClient> clients = new ArrayList<TrackerClient>();
    Map<Integer, PartitionData> partitionDataMap = new HashMap<Integer, PartitionData>(2);
    partitionDataMap.put(DefaultPartitionAccessor.DEFAULT_PARTITION_ID, new PartitionData(1d));
    clients.add(new TrackerClient(uri, partitionDataMap, new DegraderLoadBalancerTest.TestLoadBalancerClient(uri),
                                  SystemClock.instance(), null));

    for (int i = 0; i < 20; i++)
    {
      cArray.add(i, new TcCallable(clients, _state));
    }

    Runnable refreshTask = new Runnable()
    {
      @Override
      public void run()
      {
        while(true)
        {
          List<String> myStrategyList = new LinkedList<String>();
          myStrategyList.add("degraderV3");
          _state.refreshServiceStrategies(new ServiceProperties("service-1",
                                                                "cluster-1",
                                                                "/test",
                                                                "unusedInThisConstructor",
                                                                myStrategyList,
                                                                Collections.<String, Object>emptyMap(),
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    // set up state
    _state.listenToService("service-1", new NullStateListenerCallback());
    _state.listenToCluster("cluster-1", new NullStateListenerCallback());
    _state.setDelayedExecution(0);
    _serviceRegistry.put("service-1", new ServiceProperties("service-1",
                                                            "cluster-1",
                                                            "/test",
                                                            "random",
                                                            null,
                                                            Collections.<String, Object>emptyMap(),
                                                            Collections.<String, Object>emptyMap(),
                                                            Collections.<String, String>emptyMap(),
                                                            schemes,
                                                            Collections.<URI>emptySet()));

    _clusterRegistry.put("cluster-1", new ClusterProperties("cluster-1"));


    _uriRegistry.put("cluster-1", new UriProperties("cluster-1", uriData));

    URI uri1 = URI.create("http://partition-cluster-1/test1");
    URI uri2 = URI.create("http://partition-cluster-1/test2");

    _state.listenToCluster("partition-cluster-1", new NullStateListenerCallback());
    _clusterRegistry.put("partition-cluster-1", new ClusterProperties("partition-cluster-1", null,
        new HashMap<String, String>(), new HashSet<URI>(), new RangeBasedPartitionProperties("id=(\\d+)", 0, 100, 2)));

    _state.listenToService("partition-service-1", new NullStateListenerCallback());
    _serviceRegistry.put("partition-service-1",
        new ServiceProperties("partition-service-1",
            "partition-cluster-1", "/partition-test", "degraderV3", null, Collections.<String, Object>emptyMap(),
                                                                        Collections.<String, Object>emptyMap(),
                                                                        Collections.<String, String>emptyMap(),
                                                                        schemes,
                                                                        Collections.<URI>emptySet()));

    Map<Integer, PartitionData> partitionWeight = new HashMap<Integer, PartitionData>();
    partitionWeight.put(0, new PartitionData(1d));
    partitionWeight.put(1, new PartitionData(2d));

    Map<URI, Map<Integer, PartitionData>> partitionDesc =
        new HashMap<URI, Map<Integer, PartitionData>>();
    partitionDesc.put(uri1, partitionWeight);

    partitionWeight.remove(0);
    partitionWeight.put(2, new PartitionData(1d));
    partitionDesc.put(uri2, partitionWeight);


    _uriRegistry.put("partition-cluster-1", new UriProperties("partition-cluster-1", partitionDesc));
    TrackerClient client1 = _state.getClient("partition-service-1", uri1);
    TrackerClient client2 = _state.getClient("partition-service-1", uri2);
    assertEquals(client2.getPartitionWeight(1), 2d);
    assertEquals(client2.getPartitionWeight(2), 1d);
    assertEquals(client1.getPartitionWeight(1), 2d);


    // Get client, then refresh cluster
    TrackerClient client = _state.getClient("service-1", uri);
    client.restRequest(new RestRequestBuilder(URI.create("d2://service-1/foo")).build(),
                       new RequestContext(),
                       Collections.<String, String>emptyMap(),
                       new TransportCallbackAdapter<RestResponse>(Callbacks.<RestResponse>empty()));

    // now force a refresh by adding cluster
    _clusterRegistry.put("cluster-1", new ClusterProperties("cluster-1"));

    // Get client, then refresh service
    client = _state.getClient("service-1", uri);
    client.restRequest(new RestRequestBuilder(URI.create("d2://service-1/foo")).build(),
                       new RequestContext(),
                       Collections.<String, String>emptyMap(),
                       new TransportCallbackAdapter<RestResponse>(Callbacks.<RestResponse>empty()));

    // refresh by adding service
    _serviceRegistry.put("service-1", new ServiceProperties("service-1",
                                                            "cluster-1",
                                                            "/test",
                                                            "random",
                                                            Collections.<String>emptyList(),
                                                            Collections.<String, Object>emptyMap(),
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